<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>Paul,</div><div id="AppleMailSignature"><br></div><div id="AppleMailSignature">Good catch. That was supposed to be 7/64s, just shy of an 1/8 inch hole.</div><div id="AppleMailSignature"><br></div><div id="AppleMailSignature">Yes, the secondary air enters under the cap below the holes. I am sorry that thi was not clear.</div><div id="AppleMailSignature"><br></div><div id="AppleMailSignature">Cheers,</div><div id="AppleMailSignature"><br></div><div id="AppleMailSignature">Jock</div><div id="AppleMailSignature"><br></div><div id="AppleMailSignature"><br><br><div>Jock Gill</div><div>P. O. Box 3</div><div>Peacham, VT 05862</div><div><br></div><div>Cell: (617) 449-8111</div><div><br></div><div>Extract CO2 from the atmosphere!</div><div><br></div></div><div><br>On Sep 10, 2017, at 6:21 PM, Paul Anderson <<a href="mailto:psanders@ilstu.edu">psanders@ilstu.edu</a>> wrote:<br><br></div><blockquote type="cite"><div>
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Jock,<br>
<br>
Seeking to understand your configuration.<br>
<br>
1. First photo says <font size="2"><span style="font-size:10pt;">Primary
air holes @ 7/16ths. </span></font><span style="font-size:10pt;"><font size="+1">Which would be almost 8 /
16th or almost 1/2 inch. Does not look like the holes are that
big.<br>
<br>
2. You do not have a concentrator hole. Instead you have 2
concentric rows of holes (photo 2). But does the secondary air
enter UNDER the piece through a gap, or does the secondary air
only meet the gases as the gases come out of the holes?<br>
<br>
Looking forward to the video.<br>
<br>
Paul<br>
<br>
</font></span><font size="2"><span style="font-size:10pt;"></span></font>
<pre class="moz-signature" cols="72">Doc / Dr TLUD / Prof. Paul S. Anderson, PhD
Email: <a class="moz-txt-link-abbreviated" href="mailto:psanders@ilstu.edu">psanders@ilstu.edu</a>
Skype: paultlud Phone: +1-309-452-7072
Website: <a class="moz-txt-link-abbreviated" href="http://www.drtlud.com">www.drtlud.com</a></pre>
<div class="moz-cite-prefix">On 9/10/2017 4:36 PM, Jock Gill wrote:<br>
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Primary air holes @ 7/16ths<br>
<br>
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Vent holes. Outer ring has 33 holes of 1/4 inch. Inner
rowing has 20 holes of 5/16ths.<br>
<br>
The secondary air is pulled into the fire via the Venturi
effect. Hot gases rising pull in the cooler, but
per-heated, secondary air that rise between the cap can
and the reactor can. Note: It appears that the diameter
of the cap with vent holes divided by the diameter of the
reactor can should be at least 1.6<br>
<br>
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<br>
The rector can can is about 6 inches in diameter. It
started life as a three pound Costco coffee can.<br>
<br>
The cap sits on three angle brackets that create a gap of
about 3 MM between the top of the reactor and the cap.
The secondary air enters through this 360 degree gap. The
cap extends about 2 CM down the sides of the reactor can.<br>
<br>
The photo show the system as configured for my last test.
Achieved 1,000 F in the draft can on top. Made some
pretty good charcoal too. 450 grams of softwood pellets
went for about 37:30.<br>
<br>
The performance/results can be varied by the height of, or
absence of, the draft can. Also vent holes can be filled
with bolts to reduce the draft. Runs times can be
extended to 50 minutes, but there will be quite a few
pellets that are not charred or are only partially
charred. Longer run times have, not surprisingly, lower
temperature yields.<br>
<br>
A 20 second video to follow. As you will see, this is not
a completely smoke free set up at this stage of
development. Some tuning appears to be required. Perhaps
1000 grams of fuel, as 450 grams leaves most of the
reactor can empty. More fuel will modify the draft
forces. Could be good or could be bad.<br>
<br>
Thoughts? Suggestions?<br>
<br>
Cheers,<br>
<br>
Jock<br>
<br>
Jock Gill<br>
P. O. Box 3<br>
Peacham, VT 05862<br>
<br>
Cell: (617) 449-8111<br>
<br>
Extract CO2 from the atmosphere!<br>
<br>
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